Răspuns :
b∈(0,1,2,3,4,5,6)
a∈(0+3,1+3,2+3,3+3,4+3,5+3,6+3) ⇒ a∈(3,4,5,6,7,8,9)
Numerele formate sunt:
4330,4431,4532,4633,4634,4835,4936
a∈(0+3,1+3,2+3,3+3,4+3,5+3,6+3) ⇒ a∈(3,4,5,6,7,8,9)
Numerele formate sunt:
4330,4431,4532,4633,4634,4835,4936